Wallerstedt is a surname. Notable people with the surname include: Jonas Wallerstedt (born 1978), Swedish soccer player and coach Sara Grace Wallerstedt (born 1999), American fashion model Brett Wall
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49799c4c99313c8c40aba56f25ed3f35dda2a301aafd9538c7d7b1436647209a. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/62737163-d008-4781-b8d8-e289a9a66365.json and https://artists.proofprofile.net/proofs/artist/62737163-d008-4781-b8d8-e289a9a66365.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821a198dc27201a6b87388733f0a91c75f94e3ca959c043957a22b09f6b36cfc. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWZ2328156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5896055a5824fa8280c633a03e4d77754aa95a58873b3340049c8ec68263b5. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN72431947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea73b87547ff214f1d2426087f2ef21a0e449d8f1407b89c37aa7890cb76ae89. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN72431948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3444ab615393268fbdf469973877764976a4f32327aba1c963547505da12ce9. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWT2458278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1156b4dd78eafe3f4577707948151485ad551b497b2aabfbe0163f9ff5ea5ead. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:16:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWT2458279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9037cbfe0dfabc935f5b628198a28af18e01045f5944781416c18f75d86e6c5b. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFS2404933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a3a63dcef1bc428005fd75136f6bb62e6e5cd133cbf719a93b2b8bd962c169. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:24:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFS2404934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98ddcd0aba52fd6f13e2467f8fafd17648762fc42f93b7debb26962f60f7466. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFS2404935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea8b2a95777a9dc1d791b092f52ada3746fee54aeaf5f76b778217080da2dca. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T19:03:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFS2404936.